1662742288 has 80 divisors (see below), whose sum is σ = 3567628800. Its totient is φ = 747601920.

The previous prime is 1662742267. The next prime is 1662742303. The reversal of 1662742288 is 8822472661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497808 + ... + 501136.

It is an arithmetic number, because the mean of its divisors is an integer number (44595360).

Almost surely, 2^1662742288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1662742288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1783814400).

1662742288 is an abundant number, since it is smaller than the sum of its proper divisors (1904886512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1662742288 is a wasteful number, since it uses less digits than its factorization.

1662742288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440 (or 3434 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 1662742288 is about 40776.7370935930. The cubic root of 1662742288 is about 1184.6997970753.

The spelling of 1662742288 in words is "one billion, six hundred sixty-two million, seven hundred forty-two thousand, two hundred eighty-eight".